Quick answer
Concrete sleepers offer the best balance of cost and strength for most residential walls. Timber is cheapest for low walls but has a shorter lifespan. Concrete block/masonry suits taller or heavily loaded walls. Gabion has built-in drainage and a distinctive natural look.
There's no single "best" retaining wall material — the right choice depends on wall height, budget, appearance preference and site conditions. See our Wall Types page for the full engineering detail on each.
| Material | Typical relative cost | Best suited to | Trade-off |
|---|---|---|---|
| Concrete sleepers | Moderate | Most residential walls up to moderate heights | Good all-round balance of cost, strength and appearance |
| Timber | Lowest | Low walls, garden terraces | Natural look, but shorter lifespan than concrete or masonry |
| Concrete block / masonry | Higher | Taller or heavily loaded walls | Highest strength, at a higher material cost |
| Gabion | Moderate–higher | Erosion control, distinctive architectural look | Built-in drainage, but needs more depth/footprint per metre of height |